What is the energy (E) of an electron accelerated by a potential difference () of 104V ? The surface temperature (T) of a certain star is 3,250K. Use the Wien displacement law to calculate the center of the emission distribution of wavelengths (max). For the de Broglie waves representing particles, the wavelength depends upon the frequency v (i.e., the waves show dispersion). Derive the relation v=c{(c21)+(21)}1/2, where c=(mech). You should recall that the mass of the electron depends on its speed v as m=me{1(v2/c2)}1/2